Christian abele



(No Model.)

C. ABELE.

GRINDING MILL No. 340,271. Patented Apr. -20,- 1886.

Nirsn STATES CHRISTIAN ABELE, OF N EW YORK, N. Y.

cautelare-dviu l..l

'FEFCATION forming part of Letters Patent No. 340,271, dated April 20, 1886.

Application filed Norenlherll, i885. Serial No. 134,058, (No model.)

To all whom. 'it may concern.-

Be it known that I, )HRIs'rLiN ABELE, of the city and county of New York, in the State of New York, have invented certain new and useful Improvements in Grinding-Mills, of which the following is a specification.

My improved mill is adapted for treating manykinds or all kinds of fluid or semifluid materials. I will describe it as applied to the grinding of paint. I provide fora continuous active current moving the fluid constantly through the center of the muller77 and out ward between the grinding-surfaces of the muller and the bed-stone. The grinding-sur faces may be burr-stone, Esopus stone, or any other substance which will endure the conditions, mechanical strain, wet, friction, and heat. I employ an uprignt cylindrical case, a horizontal bed-stone occupying the whole bottom of the interior thereof', anda muller of smaller diameter than the bed stone, with ahole iu the center, lying upon the bedstone and carried around thereon by a crank formed ou the lower end ofan upright shaft, and driving-gear for communicatinga revolving` motion thereto. One or more wings fixed on the inner face of the casing deflect the fluid inward and pro ject it toward and into the hole in the center ofthe muller. It descends through that hole and flows outward between the stones, where it is ground. This operation is repeated, all the fiuid being successively passed up the outside of the muller, led inward by the wings, thence passed downward through the center of' the muller, and outward between the muller and the bed-stone, thus forming a continuous circuit and carrying all the particles successively through the mill until the whole is properly reduced. The inner face of the casing is equipped with one or more narrow spiral wings,which promote the action in circulating.

. the semi-fluid material by aiding to move the same upward at the outside The crank-shaft takes hold of the muller in such a way as to contribute its gravity to press down on the muller. The crank takes holdA of the muller by a keyed connection fitted with liberty to tilt a little, but so that the muller cannot turn loosely. The shaft may shift its position up and down, to allow for wear or any irregulari` ties. A

The following is a description of' what I consider the best means of carrying out the invention.

The accompanying drawings forni a part of' this specification.

Figure l is a central vertical section, certain portions being shown in elevation; and

.Fig.`2 is a horizontal section on the line a' .fc

in Fig. l.

Similar letters of' reference indicate corresponding parts in all the figures where they occur.

A is a casing of cast-iron or other suitable.

material lined with wood a. A bed-stone, B, is cemented firmly in the bottom in its interior.l Its upper face may have any approved dress An inclined or helical shelf, C, is arranged in the upper part of the interior of the casing. Two suehare shown, and l prefer two; but one alone mayserve. A stout framing, A', bolted on the casing A, forms bearings for an upright crank-shaft, I) D. The fixed bearings are in line with the axis of the casing. The crank D is finished at its lower end to rest in the cross-bar in the muller which is allowed vto revolve therewith. E is the muller, a cylindrical stone having an opening, e, down through its center, and its lower face finished with any suitable dress. The hole e is larger than the crank D', affording room for a liberal stream of' the fiuid material to pass down aroundthe crank, notwithstanding the presence of two considerable cross-bars which partially obstruct it. One of these cross-bars, F; isinserted from the bottom, matching in suitable recesses, e e', and secured by sulphur or other reliable cement. The center of this bar is adapted to receive the rounded foot of crank D.

Gis a cross-bar let in the upper side of the muller, engaging in recesses e`A e'laud properly cemented. Its center is bored vertically to receive the crank D. A spline-key, D2, fitted in corresponding grooves in the crank D and bar G, engages the parts together; but the.

key is fitted sufficiently easy to allow the muller to tilt a little, and to compensate for iinperfect workmanship or unequal wear.

M M are fixed wings, curvedy as shown. They are mounted in the interior of the casing A a, with their lower edges lying close above the plane of traverse of the muller. The'current of fluid which is carried Iaround in the roo upper portion of the mill is deflected inward by these curved wings and led to the central hole, e. l

The shaft D is supported in bearings in the stout framing A,which also supports the bearings of a horizontal shaft, H, having fast and loose pulleys H H2 and a beveled gear-wheel, H3, which engages with a larger beveled gearwheel, I.

The upper end of the shaft D is splined or longitudinally grooved, as indicated by d. The hub of the gear-*wheel I is correspondingly grooved and fitted loosely upon it. A loosefitting key or feather, J, engages these members of the mechanism together, so that the shaft is compelled to turn with the gear-wheel, and may rise and fall independently. The construction allows the weight of the shaft D and crank D to bear on the rounded step at the lower end of the crank-pin, contributing to the force holding the grinding-surfaces to gether, while allowing the muller to tilt to a limited extent in every direction, and also to rise and sink bodily at each revolution or at intervals when an accumulation of material under it, or other cause, shall induce such motion.

In the use of the invention the shaft D is revolved moderately. The fluid or semi-fluidmaterial being treated should be in sufficient quantity to fill the interior of the mill somewhat above the upper surface of the muller. As the shaft D and its connections revolve, the muller E traverses over the entire surface of the bed B, the semi-fluid material being caught and ground along the line where the surfaces meet. The upper surface of' the bed-stone B and the lower surface of the muller E are dressed according to any ordinary or suitable style of millstone-dressing to facilitate the grinding. As the muller revolves, it carries around with it considerable waves of the semifluid material. These, as they successively strike the wings M, are deflected inward, and a liberal quantity of the fluid is at two periods in each revolution of the muller thrown into the interior orifice, e. The material thus received is, by centrifugal force and the action of the grooves, (the dress,) caused to move outward between the muller E and stone B. So soon as it escapes from, under the muller and joins the quantity already outside of the latter it is, by the aid of centrifugal force and of the inclined shelf or ridge C, induced to rise in the space outside of the muller, and upon being projected against one of the wings M it is led inward and again deposited in the interior space, e, in the center of the muller. Thus the operation is repeated until the whole material is sufficiently ground.

My construction allows the whole of the material to be treated in succession an indefinite number of times. There is no space in which any quantity may be retained unground. Vhen the whole is sufficiently reduced, it may be drawn out through an orifice controlled by `a plug, K.

A2 is a casing hollow below. In its interior is the plug K, of hard wood or other suitable material, fitted tightly in atapering hole, and

thrust inward or drawn backward at will by a screw, L, operated by a hand-wheel, L.

Modifications may be made in the forms and proportions. I can extend the lower bearing, which supports the shaft D, down nearer to the crank. This would afford some advantages theoretically; but itis preferableto allow sufficient height to lift the crank clear of the muller. Care being taken to properly shape the framing A', the muller may be tilted up on edge and lifted out to facilitate a thorough cleaning of the mill after completing the grinding of one kind of' material and before commencng to grind another.

The wings M may be curved more or less than I have shown, or they may be straight. A greater number may be used. One alone may serve. It is only essential that the wing or wings deflect the current of liquid or semiliquid material flowing in the periphery of the interior and lead it into the hole in the center.

The cross-bar F, which serves as the step, may be higher than is here shown. I prefer for general purposes to place it close up to the crossbar G.

Whenever it is desired to stieu the shaft by supporting it lower, the bearing in .the cross-frame A may be extended downward, as indicated by the dotted lines.

The drawings show two shelves, (l. I can use one or more. For general purposes two shelves, (l, may be preferable.

I claim as my invention- 1. The annular muller E e, in combination with the larger bed-stone B, inclosingcasing A, the crauksl1aftD D', for gyrating and also rotating the muller eccentrically, and means, as the key D2, for holding the parts loosely engaged, so that they may rock or tilt, all sub stantially as herein specified.

2. The wing M, forming aehannel directing the material inward obliquely from the exterior to a point near the center of the mill, in combination with the casing A, bed-stone B, annular muller E e, and means forboth gyrat- IfO lIO

ing and revolving the latter, all arranged for joint operation as herein specified. V

3. The casing A, bed-stone B, crank-shaft D D', driving-wheel I, and its loose connections, in combination with the annular muller E e, having a step on which the weight of the shaft rests, all arranged to serve substantially as herein specified.

4. The hollow revolving muller E e, bedstone B, casing A, and one or more inclined spiral shelves, C, and wings M, combined and arranged for joint operation, as herein specified.

In testimony whereof I have hereunto. set my hand at New York city in the presence of two subscribing witnesses.

XVitnesses: CHRISTIAN ABELE.

THOMAS DREW STETsoN, CHARLES R. SEARLE. 

